Originally Posted by 00pipirose
This stuff is on top of my 1988 aluminum roof. I've already removed about 95% of it as it was cracked and brittle, not water tight anymore. I'm wondering what the heck it is and whether or not I need to redo it? I'm assuming that the previous owner put this stuff on and it's just kinda slapped on there, not very cleanly. I'm also wondering if I can just put some sealant where needed instead? The only problem is that when removing the white stuff I found a few small holes-can sealant be used to seal these up as well?
Looks like a cheap caulk of some kind. Yes remove all of it that you can. Then follow directions on the Dycor rubber sealant and reseal it all. We've had good luck with the Dycor. It cannot be used around windows
as it runs that is why it is used on the roof area. Clean the area around the small holes and put some over them. Dycor is quite thin compared to other caulk and will flatten out so clean the area for a ways around the small holes. I've never seen Dycor crack like that as it is rubber and rubber doesn't crack open. For anyone that has a rubber roof check to make sure the sealant you get can be used on the rubber roof.